private void CloneAndAddInternal(ProjectRootElement sourceProject)
{
bool externalSource = sourceProject != null;
var projectPair = GetNewInMemoryProject("Clone", TestCollectionGroup.BigProjectFile);
var xmlPair = new ProjectXmlPair(projectPair);
Assert.True(xmlPair.View.HasUnsavedChanges);
xmlPair.View.Save();
Assert.False(xmlPair.View.HasUnsavedChanges);
sourceProject ??= xmlPair.View;
// var existingItemGroup1 = sourceProject.QuerySingleChildrenWithValidation<ProjectItemGroupElement>((ig) => ig.Label == "Group1");
var existingItemGroupList = sourceProject.AllChildren.OfType <ProjectItemGroupElement>().Where((ig) => ig.Label == "Group1").ToList();
Assert.Single(existingItemGroupList);
var existingItemGroup = existingItemGroupList[0];
var cloned = (ProjectItemGroupElement)existingItemGroup.Clone();
Assert.NotSame(cloned, existingItemGroup);
Assert.False(sourceProject.HasUnsavedChanges);
var sourceIsALink = ViewValidation.IsLinkedObject(sourceProject);
ViewValidation.VerifyNotNull(cloned, sourceIsALink);
if (externalSource)
{
Assert.ThrowsAny <InvalidOperationException>(() => xmlPair.View.AppendChild(cloned));
}
else
{
var clonedPair = xmlPair.CreateFromView(cloned);
xmlPair.QueryChildrenWithValidation <ProjectItemGroupElement>((ig) => ig == cloned || ig == clonedPair.Real, 0);
xmlPair.View.AppendChild(cloned);
Assert.True(xmlPair.View.HasUnsavedChanges);
Assert.True(xmlPair.Real.HasUnsavedChanges);
clonedPair.VerifySame(xmlPair.QuerySingleChildrenWithValidation <ProjectItemGroupElement>((ig) => ig == clonedPair.View || ig == clonedPair.Real));
xmlPair.QueryChildrenWithValidation <ProjectItemGroupElement>((ig) => ig.Label == "Group1", 2);
clonedPair.VerifySetter("Group2", (g) => g.Label, (g, v) => g.Label = v);
xmlPair.Verify();
Assert.Equal("Group1", existingItemGroup.Label);
}
}
